uncertainty (version 0.2.0)

plot.summary.uncertainty: Plots an uncertainty summary. It shows the uncertainty contribution from each involved quantity

Description

Builds a barplot with a bar for each source of uncertainty. If correlation is present then an additional entry is added. The current metric used to display is When correlation is present its contribution may be negative.

Usage

# S3 method for summary.uncertainty
plot(x, y = NULL, ...)

Value

None (invisible NULL)

Arguments

x

an uncertainty summary object

y

not used.

...

additional parameters to customize the plot

Author

H. Gasca-Aragon

Maintainer: H. Gasca-Aragon <[e-mail]>

Details

none

References

JCGM 100:2008. Guide to the expression of uncertainty of measurement

JCGM 100:2005. Supplement 1 Propagation of distributions usign a Monte Carlo method.

EURACHEM/CITAC Guide CG 4. Quantifying Uncertainty in Analytical Measurement

See Also

summary.uncertainty, plot

Examples

# create an uncertainty budget
cor.mat<- matrix(c(1,-0.7,-0.7,1),2,2)

u.budget<- uncertaintyBudget(x=list(name=c("x0","x1"), 
	mean=c(10,20), u=c(1,5), dof=c(10,10),
	label=c("x[0]", "x[1]"), distribution=c("normal","normal")), 
	y=cor.mat)

# estimate the measurand uncertainty using an uncertainty budget,
# a measurand definition and a selected estimating method.
GFO.res<- uncertainty(x=u.budget, 
y=list(measurand_name="ratio.GFO", measurand_label="ratio[GFO]", 
measurand_model="x0/x1", method="GFO", alpha=0.05))

# create an uncertainty summary object
GFO.sum<- summary(GFO.res)

# display the chart
if (FALSE) plot(GFO.sum)